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What is wrong with this code that tries to read a file?

medium📝 Debug Q7 of 15
C Sharp (C#) - File IO
What is wrong with this code that tries to read a file?
using var reader = new StreamReader("data.txt");
string content = reader.ReadToEnd;
Console.WriteLine(content);
AStreamReader cannot be used with using var
BReadToEnd returns void, not string
CReadToEnd is missing parentheses
DFile path must be absolute
Step-by-Step Solution
Solution:
  1. Step 1: Check method call syntax

    ReadToEnd is a method and requires parentheses to invoke it.
  2. Step 2: Verify other statements

    Using var is valid; ReadToEnd returns string; relative paths are allowed.
  3. Final Answer:

    ReadToEnd is missing parentheses -> Option C
  4. Quick Check:

    Method calls need parentheses [OK]
Quick Trick: Always add () when calling methods like ReadToEnd [OK]
Common Mistakes:
MISTAKES
  • Forgetting parentheses on method calls
  • Misusing using var
  • Assuming ReadToEnd returns void

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